Separable manifold record pad



June 25,1951 5 wEmST N 2,555,405

SEPARABLE MANIFOLD RECORD PAD Filed Oct. 19, 1948 BERT. WEINS'IEIH ATIJENEY Patented June 26, 1951 UNITED STATES PATENT OFFICE SEPARABLE: MANIFOLD RECORD PAD Bert Weinstein, New Yrk,.N. Y.

Application October 19, 1948, Serial No. 55,320

1 Claim.

This invention relates to new and useful improvements in manifold record devices, and, more particularly, the aim of the invention is to provide a novel and valuable such device of the type comprising a pad of any desired number, as N, record sheets, these interleaved with carbon or transfer sheets to a total of N-l', so that a transfer sheet is interposed between each two adjoining record sheets, and wherein a means of superior type is provided for attaching all the sheets in superposed relation, in combination with an improved differential shaping of the two kinds of' sheets and a special. linearly" extended weakening of each record sheet transversely thereof near its upper end and adjacent" to such attachment.

- The new attaching means. is quickly and easily incorporated, and is so economical as to represent a marked cost decrease as compared with previous proposals seeking. the same end; and the two. features just above alluded to assure convenient and instantaneous separation of all the record sheets. from all the transfer sheets and from the remainder of. the pad when the desired notations have been entered directly on the top record sheet and also by simultaneous carbon transfer on the duplicating and underlying sheets.

The transfer sheets may be carbonized at both sides, but preferably, and as herein illustrated, they are carbonized only at their under sides; and while it is well-known that transfer sheets for use in manifold devices: of the general class to which the present invention pertains have been so developed that they may be produced at such low cost as to warrant their discarding when the manifold device containing the same has received the desired. entries on the record. sheets, some saving in the slight cost of these transfer sheets results from oarbonizing them on one side only.

The attaching means of the invention involves the use of an adhesive, in combination with another feature involving special edge formations included in all the sheets, or in all the transfer sheets, or in all the record sheets. These formations are along the upper margins of the sheets carrying the same, and the adhesive is applie" also along such margins. The use of an ad hesive at the stated location has. been heretofor proposed, but, due to the difficulty encountered because of the inability of all practicably applier adhesives to become dependably bonded to the carbonized surface of a transfer sheet, more ex" pensive alternatives have been resorted to, such a the use of wire staples and the like, and other expedients; The difiiculty just mentioned has been fullyovercome by the'present invention; and this without falling heir to another difficulty, characteristic of some of the said expedients, which is a diminution of the over-all free flexibility'of the manifold record device. When such flexibility is absent, there is trouble in inserting the device properly relative to the platen of a typewriter and there is improper line-feed of the device in response to manual actuation of the line-feed mechanism of the typewriter.

For further comprehension of the invention, and of the objects and advantages thereof, reference will be had to the following description and accompanying drawings, and to the appended claim in which the-various novel features of the invention are more particularly set forth In the accompanying drawings forming a material part of this disclosure:

Fig. 1 is a top plan view of one now' favored embodiment of the manifold record device of the invention; with the top record sheet raised and curled back at its lower left' hand corner;

Fig, 2; is also a top plan view of' said device, but with said top record sheet imagined. to be removed, and with the top transfer sheet raised and curled back at its lower left hand corner and imagined to be raised and curled back at its.

right hand corner. portion. of said sheet imagined to be raised and curled back.

For a satisfactory record sheet of the ordinary full billhead size, Fig. 3. is drawn to actual scale. In all the. views, and particularly in Fig. 4, for clarity, thicknesses, the widths of. certain slits, and intra-sheet' spacings, are much exaggerated Referring now in detail to the structural fea tures of the manifold record devices. shown, and first in this connection to Figs. 1-4, the pad con stituting the device is as a whole designated Merely by way of example, such pad is illustrated as comprising four record sheets II and three.

alternating transfer sheets [2.

The record sheets ll, all of the same length, are longer than the transfer sheets i2, which latter are also all of the same length; the bottom of a record sheet ll being indicated at i and the bottom of a transfer sheet l2 being indi cated at l5.

Along the top of a record sheet H is a line of serrations [6, each tooth whereof is shown as triangular, with all such teeth alike and with the intra-teeth cut-outs of like triangular form. Along the top of a transfer sheet i2 is a line of like serrations ll; all the sheets being similarly serrated and in such manner that when all the sheets are stacked with one transfer sheet overlying each of all but the top record sheet (note Fig. 4), the correspondingly placed teeth of the serrations l6 and I? all match on all the sheets. The said intra-teeth triangular cut-outs will below be called the notches.

All the said serrations matching as just explained, merely a single cutting knife is required for providing a multiplicity of stack piled record sheets with the serrations to be extended along their tops, and for providing a multiplicity of stack piled transfer sheets with the serrations to be extended along their tops. This may be done either incidental to cutting the other three sides of the sheets of each such stack or following the cutting of said sheets to the desired over-all lengths and widths, preparatory to interleaving the record and transfer sheets for constituting one pad. Or, with the sheets of the desired overall lengths and widths, said interleaving may be completed for each pad, and then each pad or a pile of the pads maybe subjected to a cutting operation to incorporate the serrations.

When a pad has been assembled, according to any of the procedures outlined or otherwise, and the serrations l6 and I! have been established, the latter constitute the aforesaid special edge formations along the upper margins of the record and transfer sheets. These formations, in combination with the adhesive to be applied, constitute the means of the invention for attaching together all the sheets of a pad. For a reason which will be appreciated from what is later said, said adhesive may be an ordinary glue or even an ordinary mucilage.

It already having been pointed out that the transfer sheets l2 are shorter than the record sheets ll, the record sheets further differ from the transfer sheets in that each of the former is provided with a linearly extended plurality of slits H3, or equivalently weakened; so that in regard to each record sheet II the integrity of the paper material thereof, as between the main portion of such a sheet below the slits l8 and the much smaller subdivision thereof above said slits, is comparatively minute as compared to the total of severances of such integrity at the slits H3. The lines of the slits I8 on each of the record sheets ll are placed so as to register depth-wisely of the pad when the same is completed by the addition of the adhesive.

Said adhesive, as finally applied and after being allowed to set, is indicated at I9 in Fig. 4. Due to its nature, as already explained, the adhesive application for each pad or at once for a plurality thereof, may be applied, as by a single brushing of the serrated end or ends of a pad or of a plurality of pads along the dot and dash line 20 of Fig. 1, in the direction say of the arrow 2|, or by a single dipping of a pad or a plurality of pads to the extent indicated by the spacing between the dot and dash lines 20 and 20 of Fig. 3, or otherwise. In any case, due to the nature and function of the registered serrations l6 and [1, the addition of the adhesive I9 need only to be to the depth indicated by the location of said line 26 relative to the crests of such serrations. This is so because on thereafter applying facewise pressure to a pad or on merely allowing the pad to lie undisturbed until the adhesive has set, the latter seeps by way of the notches of the serrations into the intra-sheet spaces at the fiat faces of the teeth between the notches, as indicated at 9 in Fig. 4.

Thereby, simply, and by an ordinary adhesive, the sheets of the manifold device become tightly bonded at said serrations; and said bonding is made dependably persistent, by an equally simple expedient. This is the fact that the carbonization '22 at the underside of a transfer sheet i2, while otherwise preferably continuous thereover, is terminated at an upper limit 22 (see Figs. 3 and 4) which is just below the line of the bottoms of the notches associated with the serrations ll. Thus the previous problem of the inability of the practicably employable adhesives to effect a permanent bond relative to a carbonized surface is fully solved.

Another feature of the invention, resulting from the differential lengths of the record and transfer sheets, as indicated at M and I5, is that all the sheets may be of rectangular outline except for the interruptions to their rectilinear continuity along their tops consequently upon the provision of the serrations IE or H, thereby avoiding the necessity of trimming oif corner portions of some or all of the sheets; yet easy and instantaneous separation of all the record sheets H simultaneously from all the transfer sheets and from the remainder of a pad may be effected. To accomplish this separation, it is merely necessary to grasp with one hand the top portion of the pad above the lines of slits l8 and grasp with the other hand the bottom portion of the pad below the bottom limits of the transfer sheets [2, and then exert a pull with either hand relative to the other.

Referring to the modification of Fig. 5, wherein the parts to which are applied reference numerals with primes added correspond, respectively, to the parts to which are applied in Figs. 1-4 reference numerals without primes, this modification is exactly like the one first described, except that the serrations l! are omitted, that is, the record sheets II are of uninterrupted rectilinear extension across their tops. Serrations like the serrations [6 or equivalents are, however, as indicated, provided along the tops of the transfer sheets 12 As will be obvious, all the advantages of the device of Figs. 1-4 are preserved in the pad of Fig. 5. A further alternative would be to employ in regard to the record sheets serrations like the serrations IT or equivalents, while omitting such serrations in regard to the transfer sheets; although it must be said that in tests thus far conducted, either the arrangement of Figs. 1-4 or that of Fig. 5 has been found to give the most satisfactory product.

While I have illustrated and described the preferred embodiments of my invention, it is to be understood that I do not limit myself to the precise constructions herein disclosed and the right is reserved to all changes and modifications coming within the scope of the invention as defined in the appended claim.

Having thus described my invention, what I 5 claim as new, and desire to secure by United States Letters Patent is:

Means for securing together the top edges of a stack of record sheets consisting of alternately interleaved record sheets and carbonized transfer sheets, comprising aligned V-shaped serrations formed along the top edges of the sheets, adhesive applied to the top edges of the sheets to a depth equal to the depth of said serrations, and lines of perforations formed in the top edge portions of the record sheets slightly inward of said serrations so that desired record sheets can be torn from the stack without interference from said adhesive, the transfer sheets having their carbonization stopped at the top edges thereof slightly inward from the inner ends of said serrations so as not to interfere with said adhesive in securing the sheets together, said serrations 6 at the top edges of the sheets being in contact with one another exposing the maximum surface area of said top edges to the securing action of said adhesive.

BERT WEIN STEIN.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS 

